門扉 == monbi == (noun) door(s) of a gate開扉 == kaihi == (noun that can take する to act as a
verb) opening the door

Left/outer radical is 'door' (戸). Right/inner
radical is 'not/spreading wings' (非). This character refers to the
'wings' or flaps of a swinging door. A page is another sort of 'wing';
this character has come to be associated especially with the front
page. Henshall
suggests as
a
mnemonic: ''A door is not a door? Must
make the front page!'